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diff --git a/examples/full-screen/simple-demos/autocompletion.py b/examples/full-screen/simple-demos/autocompletion.py
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+++ b/examples/full-screen/simple-demos/autocompletion.py
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+#!/usr/bin/env python
+"""
+An example of a BufferControl in a full screen layout that offers auto
+completion.
+
+Important is to make sure that there is a `CompletionsMenu` in the layout,
+otherwise the completions won't be visible.
+"""
+from prompt_toolkit.application import Application
+from prompt_toolkit.buffer import Buffer
+from prompt_toolkit.completion import WordCompleter
+from prompt_toolkit.key_binding import KeyBindings
+from prompt_toolkit.layout.containers import Float, FloatContainer, HSplit, Window
+from prompt_toolkit.layout.controls import BufferControl, FormattedTextControl
+from prompt_toolkit.layout.layout import Layout
+from prompt_toolkit.layout.menus import CompletionsMenu
+
+# The completer.
+animal_completer = WordCompleter(
+    [
+        "alligator",
+        "ant",
+        "ape",
+        "bat",
+        "bear",
+        "beaver",
+        "bee",
+        "bison",
+        "butterfly",
+        "cat",
+        "chicken",
+        "crocodile",
+        "dinosaur",
+        "dog",
+        "dolphin",
+        "dove",
+        "duck",
+        "eagle",
+        "elephant",
+        "fish",
+        "goat",
+        "gorilla",
+        "kangaroo",
+        "leopard",
+        "lion",
+        "mouse",
+        "rabbit",
+        "rat",
+        "snake",
+        "spider",
+        "turkey",
+        "turtle",
+    ],
+    ignore_case=True,
+)
+
+
+# The layout
+buff = Buffer(completer=animal_completer, complete_while_typing=True)
+
+body = FloatContainer(
+    content=HSplit(
+        [
+            Window(
+                FormattedTextControl('Press "q" to quit.'), height=1, style="reverse"
+            ),
+            Window(BufferControl(buffer=buff)),
+        ]
+    ),
+    floats=[
+        Float(
+            xcursor=True,
+            ycursor=True,
+            content=CompletionsMenu(max_height=16, scroll_offset=1),
+        )
+    ],
+)
+
+
+# Key bindings
+kb = KeyBindings()
+
+
+@kb.add("q")
+@kb.add("c-c")
+def _(event):
+    "Quit application."
+    event.app.exit()
+
+
+# The `Application`
+application = Application(layout=Layout(body), key_bindings=kb, full_screen=True)
+
+
+def run():
+    application.run()
+
+
+if __name__ == "__main__":
+    run()